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Biting fleas can make your cat miserable.

Fleas might seem like a small problem – but just a few flea bites can make your cat miserable. By the time you realize it, biting fleas may have bitten your cat hundreds of times.

Advantage® II for cats kills fleas through contact, so fleas do not have to bite your cat to die.

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Advantage® II for cats

Advantage® II for cats is a convenient, fragrance-free, monthly topical solution that kills fleas through contact. Fleas do not have to bite your cat to die.

Advantage® II kills fleas through contact. Fleas do not have to bite your cat to die FLEAS
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Advantage® II for large cat packaging
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The right flea treatment matters.

We all know cats are independent. But they still depend on us to give them the essentials they need – which is why the right flea treatment is just as important as the right food, care and love.


With oral flea medications, fleas have to bite your cat and be exposed to the medication in the pet before the fleas are killed.

Advantage® II for cats flea preventive is applied to your cat topically and kills flea eggs, flea larvae and adult fleas through contact with your treated pet. Fleas do not have to bite your cat to die.

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Think your indoor cat isn’t at risk for fleas? Think again.

Did you know that adult fleas can come into your home on people’s clothing, or other pets – and you may not even know it?

Fleas may already be a problem on your cat – even if you don't know it. Due to cats' grooming behavior, it can be hard to find adult fleas on your cat. By the time you realize it, biting fleas may have bitten your cat hundreds of times.

That’s why Advantage® II for cats works all month long to break the flea life cycle – so you can help protect your cat from fleas.

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A veterinarian-recommended solution for 20 years.

Imidacloprid, a key ingredient in Advantage® II for cats, has been shown to be effective in killing fleas. Bayer is the only animal health company to continuously monitor the effects of an ingredient on fleas, and publish the results through the Bayer Flea Susceptibility Monitoring Program.

It’s just one more reason to choose Advantage®II for cats to help protect your cat from fleas.

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A single flea can lay up to 50 eggs in one day.1

Your pet can then scatter those eggs all over your home simply by scratching, shaking or walking, which means that fleas and their eggs can easily infest your home. That’s how just a few fleas can quickly become hundreds.

Using Advantage® II monthly on your cat can help you break the flea life cycle by inhibiting the fleas’ ability to reproduce. Once you have a flea infestation, you may want to consider treating the source of the infestation in your home and yard too.

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1Dryden M, Payne P, Zurek L. (2003). Pests that affect human health; Fleas infesting pets & homes. Kansas State University Agricultural Experiment Station and Cooperative Extension Service; MF-760.

  • HELP PROTECT YOUR PET

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    Advantage® II for cats

    Start your comprehensive flea infestation plan with Advantage® II for cats. It kills fleas through contact. Fleas do not have to bite your cat to die.

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  • HELP PROTECT YOUR HOME

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    Advantage® Carpet & Upholstery Spot Spray

    Add another tier of protection with Advantage® Carpet & Upholstery Spot Spray. It kills fleas, brown dog ticks, dust mites and bed bugs.

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  • HELP PROTECT YOUR YARD

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    Advantage® Yard & Premise Spray

    Don’t let flea prevention stop at your front door. This third level of protection kills insects, fleas and ticks around the perimeter of your home, and on your deck and patio.

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You don't see 95% of the problem.2

The flea life cycle consists of four stages: egg, larvae, pupae and adult. But the adult fleas you see are only the beginning.

In an existing flea infestation, adult fleas only represent around 5% of the full infestation. That means that 95% of the infestation consists of life stages (such as flea eggs and flea larvae) that can be almost invisible to the naked eye.2

Preventing an infestation means breaking the flea life cycle. One way to do this is by choosing a product with an Insect Growth Regulator – like Advantage® II for cats – to target immature stages and help keep fleas from successfully reproducing.

2,3 Grace SF. Fleas. In: Norsworthy GD, Crystal MA, Grace SF, et al, eds. (2006). The Feline Patient. 3rd ed. Ames, IA: Blackwell Publishing; 106-107.

Advantage® Carpet & Upholstery Spot Spray, Advantage® Yard & Premise Spray, Advantage® Household Spot & Crevice Spray, and Advantage® II for cats weighing over 9 pounds packaging

Find a retailer near you to help treat a flea infestation now, and help prevent one in the future.

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Did you know that Advantage® II is also available for dogs? SEE ADVANTAGE® II FOR DOGS